Heddle for looms.



PATENTED SEPT. 20, 1904.

J. GROB. HEDDLB FOR LOOMS.

APPLICATION FILED JUNE 30, 1902.

N0 MODEL.

UNITED STATES Patented September 20, 1904.

PATENT OFFICE.

HEDDLE FOR LOOIVIS.

SPECIFICATION forming part of Letters Patent N0. 770,282, dated September 20, 1904.

Application filed June 30 1902. Serial No. 113,770. (No model.)

To all whom it may concern.-

Be it known that I, JULIUS GROB, a citizen of the Republic of Switzerland, residing at Horgen, Switzerland, have invented new and useful Improvements in Heddles for Looms, of which the following is a specification.

This invention relates to loom-heddles; and it has for its object a construction whereby a heddle that is perfectly flat from end to end, or substantially so, is obtained, so that it may occupy a minimum space and at the same time admit of being tilted by the tension thereon of the warp-thread, so that the latter will not be flexed at any point of its passage over the heddle and through the eye thereof, whose edges are of course rounded and polished.

A further object of my invention lies in the construction of the eye, whereby the warp may be threaded therethrough either from the right or from the left and whereby the life of the heddle is materially increased and the liability to breakage of the warp by reason of wear of the edges of the eye into ridges and furrows minimized.

These objects I attain by forming the bot-- tom of the eye perpendicular to its sides and by making the eye of a greater width than that of the heddle at either end of the eye. I thus provide an increased bearing-surface for the warp-thread extending substantially or nearly from one side of the eye to the other when the warp is under tension and the heddle is tilted, as above set forth, whereby the liability to breakage of the warp and the scouring or wear of the bearing-surface are minimized and the formation of grooves in the bearing-surface practically avoided, since the wear of said bearing-surface will be substantially uniform from nearly one side of the eye to the other. In order to admit of the heddle being turned end for end in the harness, I

' form the top of the eye also perpendicular to the bottom a and top cl of the eye being perpendicular to its sides, and with a view to a saving of metal that part of the heddle in which the eye is formed may be suitably expanded or spread laterally to the required extent. When the warp-thread 0 is under sufficient tension, the heddle, by reason of the increased distance between the opposite inner edges of the eye 6, is slightly tilted, so that there will be no flexure of said thread, as

shown in Fig. 3, while if the tension of the warp is slack the thread 0 will be slightly flexed, while the heddle will remain in its normal position, as shown in Fig. 4. From an examination of Fig. 8 it will be seen that when the warp is under tension and the heddle tilted the thread will have bearing on the wide bottom of the eye from nearly one side thereof to the other, so that the wear is uniformly distributed substantially or nearly over the entire bearing edge, and the formation of grooves and ridges in said edge, as is common in heddles of usual construction, is practically avoided. It will be obvious to any weaver that the warp may be threaded through the heddle-eye either from the right or from the left, as shown in Figs. 3 and 4, and that such heddle may be turned end for end in the harness or leaf. These advantages of course increase the life of the heddle and obviate the inconvenience to the weaver which ordinarily results from the threading of the warp the Having thus described my invention, what I claim as new therein, and desire to secure by Letters Patent, is

1. As a new article of manufacture, a loomheddle made of a strip of thin sheet metal provided intermediate its ends with an eye having a bearing surface for the warp-thread of greater length than the width of the heddle, for the purpose set forth.

2. As a new article of manufacture, a reversible heddle made of a strip of thin sheet metal provided with an eye having at either end a bearing-surface for the warp-thread of greater length than the width of the heddle, for the purpose set forth.

3. As a new article of manufacture, a reversible loom-heoldle comprising a comparatively narrow and light strip of sheet metal having intermediate its ends an eye of greater width than that of the heddle on either side of said eye, the latter having parallel top and bottom walls, for the purpose set forth.

4L. As an article of manufacture, a reversible loom-heddle comprising a comparatively narrow and light strip of sheet metal having intermediate its ends an eye of greater width than that of the heddle on either side of the eye, the latter having parallel top and bottom walls and arcuate side Walls, for the purpose set forth.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

JULIUS GROB.

Witnesses Monrrz VEITH, A. LIEBERKNEOHT. 

